由jar变成war
pom.xml:<packaging>jar</packaging>

如果是上面的打包方式，启动方式则为

mvn package
java -jar target/mymodule-0.0.1-SNAPSHOT.jar

改变成war

pom.xml:<packaging>war</packaging>

		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>

如果要发布到外部的tomcat同时需要改变启动方式
新增ServletInitializer类

import org.springframework.boot.builder.SpringApplicationBuilder;  
import org.springframework.boot.context.web.SpringBootServletInitializer;  

public class ServletInitializer extends SpringBootServletInitializer {  

    @Override  
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {  
        return application.sources(Application.class);  
    }  

}  

Application.class 为标注有@SpringBootApplication的主启动类